JPS5912280A - Door opening mechanism of freezing refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerator-freezer, and particularly to a door opening mechanism that is optimal for ease of handling.

The conventional push-button door opening mechanism was from the era of natural convection cooling, and there were no magnets attached to the cold air seal gasket, so a spring attached to the door hinge was twisted when the door was opened, and the door was simply latched. It is something. The structure is such that the latch is released by pressing a push button, and the door is opened using spring force.However, in current forced convection cooling refrigerators equipped with magnetic gaskets, the spring force is strong enough to release the holding force (approximately 3 to 7) caused by the magnetic force. is required, and when closing the door,
The disadvantage is that it requires a large amount of force to handle.

An object of the present invention is to provide a door opening mechanism with good operability.

When closing the door, we apply the principle of lever to effectively use the door, with the basic principle of an inexpensive mechanism that can be closed with a small closing force and that can store the force that cancels out the holding force due to the magnetic force of the magnet gasket. devised a solution.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a refrigerator-freezer 1 according to the present invention, in which a push button 3 is provided on the freezer compartment door 2 and a push button 5 is provided on the refrigerator compartment door 4.

FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1.

FIG. 3 is a diagram showing a state in which the door opening mechanism of the present invention is incorporated into a refrigerator compartment door 4. FIG. In this figure, 6 is a pin (A) that is slidably attached to the case 7, and one end 6a is attached to the refrigerator compartment 8.
The other end 6b contacts the receiving part (A) 9 fixed to the side wall 8a of the
is in contact with one end 10a of the cam plate (A) 1.0.

The cam plate (A) 10 is attached to the shaft 11 fixed to the case 7.
It is rotatably mounted. A hole 10C is provided at the other end 101, into which the bent portion 12a of the rod 12 is inserted.

The other end bent portion 121) of the rod 12 is connected to the cam plate (B) 1
3 is inserted into a hole 13b provided at one end 13a of 3.

Like the cam plate (A) 10, the cam plate (B) 13 is rotatably attached to a shaft 14 fixed to the case 7. A torsion spring 15 is attached to the shaft] 4, and a cam plate CB')
13 in the clockwise direction. The other end 13C of the cam plate CB) 13 has a cylindrical shape, and is used to smoothly compress the compression coil spring 17 attached to the pin CB) 16. The spring receiver is slidably attached to the pin CB) '16. The seat 18 is pressed against the seat 18. The pin (B) 16 is slidably attached to the case 7, and is provided with a receiving portion 16a for the compression coil spring 17, a receiving portion 161 for return operation, and a groove portion 16C for regulating sliding movement. There is. Moreover, one end 16d is in contact with a receiving part (B) 19 fixed to the side wall of the refrigerator compartment 8. 2o is a regulating plate and the groove 16 of the pin (B) 16
One end 2°a is inserted into C, and the other end 20b has a hole 20C, into which one end 21a of the L potato odor 21 is inserted. L potato odor 2
1 is rotatably mounted on a shaft 22 fixed to the case 7, and biased clockwise by a torsion spring 23 attached to the shaft 22. The other end 21b of the L potato odor 21 is in contact with the shaft 5a of the push button 5 provided on the front side of the refrigerator compartment door 4.

The door opening mechanism of the present invention is also incorporated in the freezer compartment door in the same manner as described above, but since the structure is the same as that in the refrigerator compartment door, the explanation will be omitted.

FIG. 3 is a diagram showing a state in which the refrigerator compartment door is opened. Fourth
The figure shows a hinge part of the refrigerator compartment door 4, and 24 is a middle hinge, which is fixed to the refrigerator-freezer main body 1. The freezer compartment door 2 is supported by the upper pin 24a, and the refrigerator compartment door 4 is supported by the lower pin 24b.

25 is a lower hinge pin metal fitting fixed to the refrigerator compartment door 4, a torsion spring 26 is attached to the pin part 25H, and the hinge pin receiver applies a spring force in the direction of opening the door between the metal fitting 27 and the pin 28 fixed to the pin part 25a. is energized so that it acts.

The freezer compartment door 2 also has an upper hinge pin metal fitting (similar to the refrigerator compartment door 4).
A torsion spring (not shown) is attached in the door opening direction.

The system has the above configuration, and its operation will be explained next.

The pin (A) 6 provided on the hinge side is the cam plate CB) 13
Due to the torsion spring J5 attached to the shaft 11 of the door, the door protrudes when the door is opened, as shown in FIG. On the contrary, the pin (B) 16 provided on the opposite side of the hinge is connected to the cam plate C by the torsion spring 15.
Due to the rotational movement of B) 13, one end 1 of the cam plate CB) 13
3C, the receiving part 16 for return operation provided on the pin (B) 16
b is pushed down, and one end 20 of the regulating plate 20 is inserted into the groove 16C.
a is inserted and is in a retracted state with sliding movement restricted.

When the door is closed from this open state (Fig. 3), the pin (A)
One end 6a of the pin (A) 6 hits a receiving portion 9 fixed in the refrigerator compartment 8, and the pin (A) 6 is retracted. This operation causes the cam plate (A) 10 in contact with the other end 6b of the pin (A) 6 to rotate. This rotation, the cam plate (A) 10 and the cam plate (
B) The rod 12 connecting 13 is a cam plate (A, )
It is pulled in the IO direction and rotates the cam plate (13) 13 counterclockwise. When the cam plate (B) 13 rotates,
The spring seat 18 is slid on one end 13c, and the compression coil spring 17 is compressed. At this time, since the sliding movement is regulated by the pin CB) 16Lt regulating plate 20, the compression coil spring 17 remains compressed.

Next, press button 5 to open the door from the closed state (Figure 2).
If you press lightly with your finger, the push button shaft 5a will slide to release the L7 tool 21.
By pressing one end 21b and rotating the L7 tool 21, the regulating plate 20 releases the L potato odor 2 by the other end 21a of the L7 tool 21.
Slide to the 1 side. This sliding action causes pin CB) 16
The groove 16C and one end 20a of the regulating plate 20 are disengaged.

Therefore, the pushing force of the push button is only needed to release the lock, so a light operating force is sufficient. Since the pin (B) 16 is released from the restriction, the pin (B) 16 tries to protrude by the spring force stored in the compression coil spring 17 and pushes away the receiving part (B) 19 fixed in the refrigerator compartment 8 at one end 16 (1). This equality cancels out the holding force caused by the magnetic force of the magnet seal, and uses the remaining spring force to open the door.The door opens at an angle that is the inertia of the door due to this spring force.After the door opens, it will open at the angle you want to open. Simply place your hand on the corner of the door to open it.

Also, to close the door from this open state, simply push the door lightly. The force sufficient to cancel the magnetic force of the magnet gasket and open it is stored in the compression coil spring 17, and the driving force that compresses the compression coil spring 17 is generated when the pin (A, ) 6 provided on the hinge side hits the receiving part 9 and is retracted. The pin (A) 6 is located at a close distance from the hinge, and the corner where you put your hand to close the door is the farthest position from the hinge, so the door can be opened with a small force due to the distance ratio from the hinge. Do it by closing it. Furthermore, the door is 90
Even if you put your hand on the corner of the door from the open position and push it, the door will close sufficiently.

As explained above, it is an easy-to-handle door opening mechanism that can be opened by lightly pressing the push button to open a door with a magnetic seal, and can be closed with a small force when closing.

In addition, claim 2 provides that, in order to further improve operability,
If the pin 28 is set so that the torsion spring 26 is deflected in the direction in which the door is opened, for example, 90 degrees, the deflection angle will be 90 degrees when the door is closed, and the pin CB) 16 described above will bend. After canceling out the magnetic force of the magnet gasket, the spring force of this torsion spring acts to open the door to 90 degrees. If you want to open the door more than 90 degrees, all you have to do is place your hand on the door. Also, at this time, pin 28
Since the torsion spring 26 is disengaged from the torsion spring 26, the torsion spring 26 will not be twisted in the opposite direction. The spring force of this torsion spring 26 only needs to be enough to open the door after the magnetic force of the magnet gasket is canceled out.
When closing the door, the operating force will not increase and the handling will not deteriorate.

The above explanation has been given using an example in which the door opening mechanism of the present invention is incorporated into the refrigerator compartment door, but a similar door opening mechanism is also incorporated into the freezer compartment door, and operates in the same manner as in the if explanation. be.

If the door opening mechanism of the present invention is incorporated into a refrigerator-freezer, handling efficiency will be further improved as described above, and even if you are holding food to be stored in the refrigerator compartment in both hands, you can open the door by pressing the push button with your elbow. can. Since the handle has been removed, the design has been completely redesigned, making it the perfect refrigerator-freezer to be incorporated into a system kitchen, as it can be matched with other handle-less storage shelves that use a push-button mechanism. Furthermore, by removing the handle, the package size becomes smaller when transporting the refrigerator-freezer and storing it in a warehouse, reducing transportation costs.

The mechanism itself does not use expensive electromagnetic solenoids, so
It is inexpensive and has good productivity, and the effects of the present invention are very large.

[Brief explanation of the drawing]

Figure 1 is a front view of the refrigerator-freezer, Figure 2 is A-A in Figure 1.
A line sectional view, FIG. 3 is a diagram showing the refrigerator compartment door in an open state, and FIG. 4 is a diagram showing the hinge portion of the refrigerator compartment door. 1... Refrigerator-freezer, 2... Freezer compartment door, 3... Push button, 4... Refrigerator compartment door, 5... Push button, 6... Pin (A
), 7...Mounting case, 9...Receiving part (A), 10
...Cam plate (A), 12...Rod, 13...Cam plate (B), 15...Torsion spring, 16...Pin (B), 16C...Groove, 17...・Compression coil spring, 19...receiving part CB), 20...regulating plate, 21...
・L potato odor, 25...lower hinge pin metal fittings, 26...torsion spring, 28...pin. Figure 3 Figure 4 353-

Claims (1)

[Claims] 1. In a refrigerator-freezer equipped with magnetic gaskets to ensure cold air sealing on each door of the refrigerator-freezer,
The action of closing the door releases the pin (A) installed on the hinge side of each door.
) hits the receiving part corresponding to the pin (A) fixed to the refrigerator-freezer body, and the cam plate (A) that touches one end of the pin (A) is pivotally attached to the shaft, so it cannot rotate. change. This rotational movement of the cam plate (A) is transmitted via the rod to the cam plate CB) provided on the opposite side of the hinge. Cam plate (
At its one end, B) compresses a spring slidably attached to a pin CB) adjacent to the cam plate CB) with a spring seat provided on the pin CB). Although the pin (B) is attached so as to be freely slidable, its sliding is restricted by a latch means such as inserting a restriction plate into a groove provided in the pin (CB). This latch means releases the restriction by operating an operating member such as a push button provided on the front of each door, and causes the pin CB) to protrude toward the refrigerator-freezer main body by a stored spring force.
The reaction force that acts between the pin (B) fixed to the refrigerator-freezer body and the corresponding receiving part cancels out the force of the magnetic gasket to keep the door open, and the door is opened using spring force. A distinctive feature of the refrigerator/freezer door opening mechanism. 2. A door opening spring is attached to each door hinge, and the door is opened to a predetermined angle after canceling the holding force due to the magnetic force of the magnet gasket. Refrigerator door opening mechanism.